#4040AE#4040AE

#4040AE is a dark, vivid blue. Relative luminance 0.078; OKLCH L 44.1% C 0.171 H 276.8°. Best body text is #FFFFFF at 8.19:1 contrast (WCAG AA passes).

Color values

HEX	#4040AE
RGB	rgb(64, 64, 174)
HSL	hsl(240, 46%, 47%)
HSV	hsv(240, 63%, 68%)
CMYK	cmyk(63.2%, 63.2%, 0%, 31.8%)
CIE-LAB	lab(33.59, 34.17, -58.85)
CIE-LCH	lch(33.59, 68.05, 300.14°)
OKLab	oklab(44.15% 0.0203 -0.1695)
OKLCH	oklch(44.15% 0.171 276.8)
XYZ	xyz(11.5853, 7.8118, 40.9335)
Luminance	0.0781 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4040AE #AEAE40

analogous

#4077AE #4040AE #7740AE

triadic

#4040AE #AE4040 #40AE40

tetradic

#4040AE #AE4077 #AEAE40 #40AE77

square

#4040AE #AE4077 #AEAE40 #40AE77

split-complementary

#4040AE #AE7740 #77AE40

monochromatic

#1F1F55 #303081 #4040AE #6565C6 #9292D7

Accessibility & contrast

On white

8.19

#4040AE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.56

#4040AE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4040AE

8.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4040AE	#FFFFFF	#000000	##FFFFFF
##4040AE	1.00	8.19	2.56	8.19
#FFFFFF	8.19	1.00	21.00	1.00
#000000	2.56	21.00	1.00	21.00
##FFFFFF	8.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054B2

Deuteranopia (green-blind)

#004AAC

Tritanopia (blue-blind)

#005C71

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #4040ae;
/* rgb */ color: rgb(64, 64, 174);
/* oklch */ color: oklch(44.1% 0.171 276.8);

Tailwind

colors: {
  custom: {
    50: '#8175c7',
    500: '#4040ae',
    950: '#000000',
  },
}

SCSS

$custom: #4040ae;
$custom-light: #8175c7;
$custom-dark: #000000;

JSON

{
  "hex": "#4040ae",
  "rgb": {
    "r": 64,
    "g": 64,
    "b": 174
  },
  "hsl": {
    "h": 240,
    "s": 46.218,
    "l": 46.667
  },
  "oklch": {
    "l": 0.44147,
    "c": 0.17071,
    "h": 276.8
  },
  "luminance": 0.07813
}

Semantic roles & 50–950 ramp

primary

#4040AE

secondary

#C2C288

accent

#D652D6

background

#F8F7FC

surface

#F0EDF8

border

#CBC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #4040AE

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →